Match each liquid mixture to its correct behavior or layer placement when processed in a s… — JAMB UTME

Match each liquid mixture to its correct behavior or layer placement when processed in a separating funnel.

Water ( $\text{density} = 1.00\text{ g/cm}^3$ ) and Tetrachloromethane ( $\text{density} = 1.59\text{ g/cm}^3$ )Forms a lower organic layer due to immiscibility and higher density than water
Water ( $\text{density} = 1.00\text{ g/cm}^3$ ) and Ethoxyethane ( $\text{density} = 0.71\text{ g/cm}^3$ )Forms an upper organic layer due to immiscibility and lower density than water
Water ( $\text{density} = 1.00\text{ g/cm}^3$ ) and Ethanol ( $\text{density} = 0.79\text{ g/cm}^3$ )Forms a single homogeneous solution and cannot be separated using a separating funnel

Cevap

Water and tetrachloromethane match with forming a lower organic layer; Water and ethoxyethane match with forming an upper organic layer; Water and ethanol match with forming a single homogeneous solution that cannot be separated by a funnel.

Tetrachloromethane is immiscible with water and denser than water, forming the lower layer. Ethoxyethane is immiscible with water and less dense than water, forming the upper layer. Ethanol is completely miscible with water, so no distinct phases form, making separating funnel isolation impossible.

Adım Adım Çözüm

Evaluate the miscibility of each liquid pair with water.

Tetrachloromethane and ethoxyethane are immiscible with water (forming two distinct layers). Ethanol forms strong hydrogen bonds with water and is miscible in all proportions.

Separating funnels require two immiscible liquid phases to function.

Determine the relative position of layers for the immiscible pairs using density values.

Tetrachloromethane (

1.59\text{ g/cm}^3

) is denser than water (

1.00\text{ g/cm}^3

), so it sits below water. Ethoxyethane (

0.71\text{ g/cm}^3

) is less dense than water, so it floats above water.

In a liquid-liquid mixture, the denser liquid forms the bottom layer.

Anahtar Kavram

Liquid-Liquid Immiscibility and Density Placement in Separating Funnels

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